Exchange 2010 - Outlook is dropping connections to Exchange servers

Hello Everyone,
I need some help in an urgent case that I'm dealing with.
We are running Exchange 2010SP3 with RU4, using external load balancer (F5).
This morning we got complains from any single user on our system telling that their Outlook clients is showing "Disconnected" or "Trying to connect" status.
First thing that we checked was if their mailboxes are accessible from OWA - the answer is yes.
Connection status is starting with "Connecting" then dropped.
We thought maybe it is coming from one of the CAS servers, so we started by removing each of the two servers at a time, but this helped only for few minutes, OWA was accessible and Outlook could connect to the servers, after few minutes, the connection was
dropped again.
MS Remote Connectivity checks are passing so it is even unclear because we are failing to see what and where is the real issue.
No errors on the hosts.
Any advice here? We have 300 disconnected users.

Do the Outlook clients connect through the F5 as well?
Twitter!: Please Note: My Posts are provided “AS IS” without warranty of any kind, either expressed or implied.

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Exchange 2013 / 2010 co-existence - Outlook won't connect to Exchange 2010 mailboxes

Greetings! I have a lab set up at home where I have been testing co-existence of Exchange 2013 and 2010 for a future corporate upgrade project.
I am running into some odd behavior. Any mailbox that has been migrated to Exchange 2013 works just fine, however, when I try to set up Outlook for a mailbox still on Exchange 2010 I receive errors. OWA works just fine for these Exchange
2010 mailboxes, it is just Outlook that has the problem. This is what I am running into:
1. Outlook uses autodiscover to locate server settings. It fails at the 'logging on to mail server' step saying that Exchange isn't available; Outlook must be connected, etc.
2. It then gives me the settings box for Exchange server and Mailbox. This is auto populated with one of the Exchange 2013 servers (there are 3 of them, all have both MBX and CAS role). If I then change the server to the Exchange 2010 CAS server,
and hit 'check names', it underlines the very same entries (like it found them this time) that were there initially and goes on to finish the configuration.
3. When I launch Outlook with this Exchange 2010 user, it fails to open with the error message that the set of folders couldn't be opened.
I've been doing as much research on this as I can. I've tried disabling IPv6 to no avail. It seems as if perhaps the issue is with Exchange 2013 proxying the request back to the Exchange 2010 servers but I am not sure what to check in that regards.
Any suggestions? Thanks in advance!

Hi,
Don´t disable IPV6 on an Exchange Server, it is, in my opinion not necessary - also applies for AD.
You can use your original SSL Cert for your new Ex 2013 environment.
In dns you want two host A records: mail.domain.com and autodiscover.domain.com
On your 2013 set your internal and external virtual directories to mail.domain.com
leave autodiscover and Powershell alone.
Also set the autodiscover URI to your Certificate name ie. mail.domain.com
Set-ClientAccessServer -Identity "YourCASServer" -AutoDiscoverServiceInternalUri "https://mail.domain.com/autodiscover/autodiscover.xml"
Thanks. I wanted to give some additional info before I run any commands. I currently have an A record for autodiscover and it is pointed to the Exchange 2013 DAG/cluster IP. I have a 3 entries for mail.domain, for DNS round robin; basically
it is listed 3 times for the IP of each of my Exchange 2013 servers. Does any of this sound problematic?

Exchange 2010 - Outlook Anywhere trying to connect to internal server name first before connecting to proxy server

Hello,
I have an Exchange 2010 question which I will post in the Exchange 2013 section since the Ask a question button in the legacy Exchange Servers section of technet takes me back to the part of Technet where I can only ask questions regarding Exchange 2013.
If someone can point me to a part where I can place a question in an Exchange 2010 forum please let me know.
We have Exchange 2010 setup with a CAS array listening to outlook.internaldomain.com
We have TMG 2010 setup with a rule for Outlook Anywhere, the rule listens to mail.externaldomain.com and traffic that meets this rule is let through to outlook.internaldomain.com.
When I fire up my laptop, which is connected to the internet, and start Outlook and let it configure my profile through autodiscover it sets it up correct and fills the Outlook profile with a servername stating outlook.internaldomain.com and a proxyserver
to be used stating mail.externaldomain.com. After initial setup when my Outlook starts it almost immediatly prompts me for a username and a password so this is working fine.
At the office we have an internal network segment where DHCP is servicing the connecting clients and giving them our internal DNS servers because they need connection to some other network segments which are not available to the internet. This network segment
does not have access to our internal Exchange environment but has full access to the internet. Clients in this network segment do want to use Outlook so using Outlook Anywhere for them is the logical way to go. When I connect my laptop to this network segment
I get handed an IP address and our internal DNS servers, when I start Outlook it takes about two minutes before a the credential prompt pops up and another 2 to 6 minutes after entering credentials before it says all folders are in sync. This is quite long
and our clients find this unacceptable.
I started testing what might be going on here and I have found that when I manually enter external DNS servers the Outlook password prompt will popup in seconds and all is working as expected so it seems Outlook is trying to connect to the internal servername
when using our internal DNS servers (which can resolve outlook.internalnetwork.com) instead of directly going to the proxy server which is to be used for Outlook Anywhere.
When I start a network monitor trace my thoughts are confirmed because when I am connected to the internal network segment OUTLOOK.EXE first tries to connect to outlook.internaldomain.com, it almost immediately gets a response stating that this route is
inaccessible but OUTLOOK.EXE keeps on trying to connect untill some sort of time out is reached (somewhere around two minutes) after which it connects to mail.externaldomain.com and Outlook shows the credential prompt.
So to round it up, when connected to DNS servers that can resolve the internal servername Outlook tries to connect to the internal servername in stead of the external name, Outlook does not reckognize the answer from the network that the internal route is
not acessible (or it does but does nothing with this information).
Has anybody experienced this behaviour in Outlook?
Does anyone have a solution in where I can force Outlook to connect to it's proxyserver and disregard the internal servername?

Thank you for your reply.
The client computers that are experiencing the issues are not domain joined, the only reason I can think of why this is occurring is because the DNS servers are able to resolve the internal hostname of the server, but I would expect Outlook to always use
the proxy server that has been set in the configuration of the Outlook profile. Or at least acknowledging the answer that the initially tried route is inaccessible and immediately continue to the proxy server.
For setting the same hostname for internal and external use, we use different namespaces internally and externally, do you mean setting the external hostname on the CAS array for internal use ? Wouldn't that push all internal communication to the internet
and to the outside interface of the TMG where the server is published with that hostname ?

Outlook clients cannot connect Exchange 2013 cutover from 2010

Hello,
My company has been running an Exchange 2013/2010 coexistence. Currently, Exch 2013 (2mbx and 1 CAS) utilizes "mail2.domain.com" for the name space. Exch 2010 (1MBX 1 CAS) uses "mail.domain.com"
We recently attempted to cutover external and internal DNS to point "mail.domain.com" and "autodiscover.domain.com" to the Exch 2013 server.
We changed all virtual directories on 2013 to use "https://mail.domain.com/owa" (ECP, EWS, etc. were changed too) for the internal and external URL. The Exch 2010 virtual directories internal URL are set to "https://internalFQDN.domain.com/owa"
the external URLs are $null
Both CAS servers were setup to use Outlook Anywhere since this is how 2013 proxies to 2010. The internal URLs for both were set to "mail.domain.com" IIS authentication Methods (Basic, NTLM). ClientAuthenicsationMethod: NTLM.
For both servers the autodiscoverserviceinternaluri was set to: https://autodiscover.domain.com/autodiscover/autodiscover.xml
The 2013 server has two SSL certificates installed. One is a wildcard cert for "*.domain.com" and the other includes our SANs (mail.domain.com, mail2.domain.com, webmail.domain.com, autodiscover.domain.com) it also includes the FQDN for the 2010
and 2013 CAS servers.
I'm speaking in the past tense because we had to roll back. The problem was no Outlook user could connect. This goes for mailboxes hosted on the Exchange 2013 and 2010 servers. The error was: "Cannot
open your default e-mail folder" to "The connection to Microsoft Exchange is unavailable. Outlook must be online or connected to complete".
Everything else worked fine during the cutover. OWA 2013 login page proxied 2010 logins properly, Outlook 2011 could connect with EWS fine, Active-Sync worked without issues too.
It was only the Outlook 2010 and 2013 clients that could not connect.
We rolled back and everything is working as it was before with the separate namespace. That leads me to think it's something with Outlook Anywhere (RPC/HTTPS)
but the settings seem correct unless I'm missing something. Any help is appreciated.
Thanks!

Hard to say. I've had to change the router to point to the old server as mail wasnt getting in. But OWA did seem ok, although I couldn't send messages... I could only see the inbox and contacts etc.

Exchange 2007 - 2010 Outlook doesn't autodiscover after mailbox move

We currently are in the process of migrating from Exchange 2007 to 2010. When I move a mailbox to 2010, Outlook (2010 in this case), fails to connect to the new environment. Restarting outlook does not help. I am forced to change the
servername in the mail applet. How can we make this happen automagically?

That URL points to the autodiscover.xml page on the 2010 CAS servers. Returns the typical
<?xml version="1.0" encoding="utf-8"
?>
- <Autodiscover
xmlns="http://schemas.microsoft.com/exchange/autodiscover/responseschema/2006">
- <Response>
- <Error Time="01:46:57.9070185"
Id="814683946">
<ErrorCode>600</ErrorCode>
<Message>Invalid Request</Message>
<DebugData
/>
</Error>
</Response>
</Autodiscover>

Exchange 2010+Outlook Anywhere+Windows XP not working together

Hello,
We have Exchange 2010 installed on Server 2008 R2. CAS/Hub/mailbox roles on same server. Outlook Anywhere is enabled and using a Go Daddy signed certificate for OWA. Now my problem is that Windows XP (w SP3) PC's that are not located inside domain and
shoud use Outlook Anywhere cannot connect to that service. Outlook version is 2007 SP2. On the other hand, that same user can connect from a Windows 7 pc what is also located outside domain without problems. On XP pc windows keeps asking for password repeatedly,
on W7 pc it asks it and accepts and logs the user in and connects it to his mailbox. I have read numerous posts about this kind of issue, put so far none of them helped me. The certificate is issued to mail.domainname.ee and autodiscover.domainname.ee. The
internal name of the server is excha.domainname.ee, external name is mail.domainname.ee. Also I used the Set-OutlookProvider cmdlet to set EXPR to msstd:mail.domainname.ee and also tried msstd:excha.domainname.ee this change did not have any effect on XP pc.
What is wrong in XP and Outlook 2007 combination not being able to connect to Echange 2010?

I was suffering from a very similar issue. The one major difference for me is that I was using a wildcard ssl certificate for "*.contoso.com" which was not matching with the server name of owa.contoso.com.
Behaviour definitely seemed to only manifest with Windows XP on the open internet (not domain joined or internal) trying to use either Outlook 2007 or 2010 to connect to our internal Exchange 2010 server via RPC over HTTPS. Autodiscover was successful
but user would be repeatedly prompted for their credentials but they would never match.
The key changes that seemed to fix this for us were to make these updates -
Set-OutlookProvider EXPR -CertPrincipalName msstd:*.contoso.com
alternatively if you dont care whether the proxy server name exactly matches your ssl cert you can do this (not recommended) -
Set-OutlookProvider EXPR -CertPrincipalName none
These commands manipulate the Microsoft Exchange Proxy Settings under the Outlook Anywhere options under the connection tab of your mail profile. In particular the field labeled "Only connect to proxy servers that have this principal name in their
certificate"
Also, to force RPC over HTTPS and never try and timeout on TCP/IP connection (which cannot work through the firewall) -
Set-OutlookProvider EXPR -OutlookProviderFlags:ServerExclusiveConnect
This should click the checkbox for "On fast networks, connect using HTTP first, then connect using TCP/IP"
This should then allow autoconfigure to work fine when setting up your mail profile. If you want to check the settings page you should have something that looks like this -
Finally, please note that Autodiscover settings are updated periodically not instantly. I believe it is something like every 15m or so. As such, make the changes above and then wait for at least 15-30mins before making any other changes.
I ended up chasing my tail and then some complete red-herring *seemed* to fix the problem. It was actually something that I had changed 20mins before!

Updated: Event ID 1006 - Can not delete Mails in OWA after installing SP1 (Exchange 2010) = Outlook and OWA Light are OK

Hi all,
4 Exchange Servers (2 DB + 2 CAS NLB Cluster) all Exchange 2010 SP1
Outlook work fine.
If I delete a message in OWA i became the following errors:
Internet Explorer:
Die Netzwerkverbindung ist nicht verfügbar. Wenn das Problem weiterhin auftritt, wenden Sie sich mit folgendem HTTP-Statuscode an den Helpdesk: 0.
Translation: The networkconnection is not available. If it happens again, contact the helpdesk with HTTP statuscode 0
Firefox:
Die Netzwerkverbindung ist nicht verfügbar. Wenn das Problem weiterhin auftritt, wenden Sie sich mit folgendem HTTP-Statuscode an den Helpdesk: 302.
Translation: The networkconnection is not available. If it happens again, contact the helpdesk with HTTP statuscode 302
Event ID 1006 MSExchange Mailbox Replication
Fehler: MapiExceptionNetworkError: Unable to make connection to the server. (hr=0x80040115, ec=-2147221227)
Before SP1 it worked fine.
Can somebody help me ?
Kind regards Andy

Hi,
First, I would like to confirm the following questions:
1. Does the issue occur on certain user mailbox via OWA or each user mailbox?
2. Which OWA folder’s email cannot be deleted, Inbox, Sent Items or each folder?
3. Which version of operating system is installed on the client machine, Windows XP, Windows Vista or Windows 7?
At this stage, I suggest you temporarily disable firewall and anti-spam for a test. If the emails still cannot be removed via OWA, please refer to the following article
and use isinteg tool to check and repair Information Store.
Description of the Isinteg utility
Thanks.
Novak Wu-MSFT

ISA 2006 publish Exchange 2010 Outlook Anywhere with KCD/NTLM and IPSEC - Problem

Hi
I have setup ISA 2006 to publish Exchange 2010 Outlook Anywhere with Kerberos Constrained Delegation and IPSEC.
The clients have an IPSEC policy pushed to them via GPO. The clients are windows 7 laptops and the ISA server is server 2003, so the IPSEC connection is IKE not AuthIP.
However, it seems that the connection will work for a while, then all of a sudden stop working with zero trace of why. I cant get the Oakley log to work and I cant see any traffic on the ISA.
I am wondering if I need to publish the CRL's externally? Currently we don't, and the Outlook Anywhere uses private certificates (as the whole point of IPSEC is to validate the internal certificate, there is no point in using
public certificates).
I have tried using the StrongCRLCheck=0 registry key in the IPsec Policy Agent on the windows 7 machine but it doesn't seem to make a difference.
Any advice would be appreciated.
Steven

Hi,
Firstly, have you received any related error messages in ISA server or on the clients' side? Besides, as you mentioned IPsec, did you have a VPN connection?
In addition,
While ISA 2006 only includes a Client Access Web Publishing Wizard for both Exchange 2003 and Exchange 2007. Which Exchange version you have chosen when publishing Exchange 2010?
Please also make sure that you have selected the
External interface for the web listener to listen on.
Besides, the link below would be helpful to you:
OWA publishing using Kerberos Constrained Delegation
method for authentication delegation
Best regards,
Susie

Exchange 2010 & Outlook 2010 - Cached Mode "okay" work well for you?

Hi All,
On our Client Laptops/PCs we disabled cache mode a long time due to issues experienced with a combination Delegates and Cached Mode occasionally affecting Calendaring. We'd end up with vanishing appointments, etc.
What I'd like to know from you is if you've had a positive experience with Exchange 2010 & Outlook 2010 32bit. If you could impart any gotchas, etc. Our environment is fairly vanilla with a total of 1500 Users.
Thank you very much for your time,
Mr Mister

Hi,
I am using myself outlook 2007 over than WAN (VPN) connection with Exchange 2010 SP2 with about 3 GB mailbox and i personally have not faced any issues. Also, we have about 600 usres with more than 2 GB mailboxes using Outlook 2010 in online mode and
there are not many issues other than email with rich text format with screen shots attached in the mail body causing outlook hang. if we use the same email in html then no issues.
It all depends on the sizing of your CAS and mailbox servers and also on the NIC speed configured on the server. I personally feel that we should have NIC card set to 1GB on the servers also the backup and replication should be on seperate dedicated LAN.

Exchange 2013 - Prevent Outlook Clients From Connecting To A CAS Server In A Different AD Site

Hi all,
I could really do with your help!
We have 3 physical sites, A, B & C, with sites A & B having a really fast low latency links between them, so from an AD point of view they are 1 site. Site C has links to both sites A & B, but the link is a lot slower.
We have an exchange design with 3 servers (one located at each physical site) that will form a DAG spread over the 3 physical sites. Ideally we will separate the CAS and mailbox server roles out and have them controlled by a hardware load balancer,
however we can have both roles on the same server if required.
What we want, is to prevent is a situation where an outlook client in site C connects to a CAS server in site A/B with the mail being hosted on a mailbox server in site C therefore traversing the network twice to get its mail.
From doing the Microsoft training course, my understanding is that in Exchange 2013, the CAS server only proxy's the request on to the mailbox server and does not redirect the request to the CAS server in the site where the mailbox server resides.
I have seen information online stating that a single namespace is the way to go as long as your site links/network bandwidth is good, but nothing to help with our scenario.
Has anyone else come across this situation and how did you get round it?
Thanks in advance :)

Hi Johnson,
Based on my knowledge, Outlook Client will connect to the CAS server which in local first.
Please check whether the CAS server that in site C is healthy.
If the CAS server in site C is healthy, please disable the CAS Load Balance for testing.
Also found a useful blog for your reference:
Exchange 2013 Client Access Server Role
http://blogs.technet.com/b/exchange/archive/2013/01/25/exchange-2013-client-access-server-role.aspx
Thanks
Mavis
Mavis Huang
TechNet Community Support

After lion 10.7.3 update messed my mac had to restore from time machine now Outlook won't connect with microsoft exchange, any idea?

after lion 10.7.3 update messed my mac had to restore from time machine now Outlook won't connect with microsoft exchange, any idea?

I've had a similar problem. On my first boot up after installing 10.7.4, Firefox would not open. Crashed every time. Safari was not affected. I have no idea if it was related to the flash plugin, but I did install a the latest version of that a couple of weeks ago.
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Exchange 2010/Outlook 2010 Security Alert (...there is a problem with the site's security certificate.)

I've been looking to resolve this issue for a while now and was hoping someone could help me understand my options.
We have Exchange 2010 & Outlook 2010 in our environment. I've created a SSL cert for our ActiveSync from a reputable CA and unfortunately, as you may not be surprised, we are seeing an alert each time we open Outlook that states:
"Security Alert; Information you exchange with this site cannot be viewed or changed by others. However, there is a problem with the site's security certificate.
The name on the security certificate is invalid or does not match the name of the site."
Of course my internal server name does not match my external server name. So the SSL I had created for use with OWA and ActiveSync is rejected by my internal Outlook clients.
After doing some research I believe this is related to the Autodiscover service being configured with my internal server name and not my external name.
I've found some info about adding New-AutodiscoverVirtualDirectory and Set-ClientAccessServer commands and then found this article that might help. (Configure
Outlook Anywhere to Use Multiple SSL Certificates) but nothing is specific to my configuration and I'm concerned about what will happen to my existing configuration if this fails.
What happens when you run Set-ClientAccessServer? Does it retain and keep the old server config in place and add a new one or does it wipe it out? Will all of my devices need to be reconfigured?
Same with New-AutodiscoverVirtualDirectory. Does this simply add another virtual directory or is it going to overwrite my existing config?
Then there is the question of whether or not any of this will actually address my issue at all.
absolutezero273c

Sorry.
"[PS] C:\Windows\system32>Set-ClientAccessServer -Identity MailExt -AutoDiscoverServiceInternalUri "https://MailExt
.contoso.com/autodiscover/autodiscover.xml"
The operation couldn't be performed because object 'MailExt' couldn't be found on 'DomainController2.contoso.local'.
+ CategoryInfo : NotSpecified: (0:Int32) [Set-ClientAccessServer], ManagementObjectNotFoundException
+ FullyQualifiedErrorId : 4D980455,Microsoft.Exchange.Management.SystemConfigurationTasks.SetClientAccessServer"...is the error I get.
I've created the split zones and populated the Forward Lookup Zones as follows:
CONTOSO.COM
MailExt(CNAME)MailInt.contoso.local
_tcp _autodiscover(SRV)MailExt.contoso.com
CONTOSO.LOCAL
MailInt(A)192.168.1.10
MailExt(CNAME)MailInt.contoso.com
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I believe what I am trying to do is create a new autodiscover object as is shown here:
I see there is a Get-ClientAccessServer & Set-ClientAccessServer command but I need to add a CAS. Does the Set-ClientAccessServer add or simply modify?
Or would that require the New-AutodiscoverVirtualDirectory command? I read
this page that discussed creating new virtual directories but that seemed a little risky without knowing all the ins and outs of how this service functions and to what degree this would affect the existing configuration.
I was able to use the Set-ClientAccessServer command and change the actual internal autodiscoverUri to https://MailExt.contoso.com/autodiscover/autodiscover.xml but the name still says MailInt and I continue to get the SSL cert warnings because it is looking
at MailInt.contoso.local.
absolutezero273c

Exchange 2010 / Outlook 2010 "client error in synchronization log"

Exchange
2010:
Error
in Synchronization Log
19:28:32 Error synchronizing
folder
19:28:32                               [8004010F-501-8004010F-0]
19:28:32                               The
client operation failed.
19:28:32                               Microsoft
Exchange Information Store
19:28:32                               For
more information on this failure, click the URL below:
19:28:32                               http://www.microsoft.com/support/prodredirect/outlook2000_us.asp?err=8004010f-501-8004010f-0
Please
assist with this error. Is it serious? The URL provided does not offer nor reflect any worthwhile information. Thanks.

The error means that the client hasn’t located the resource it’s looking for
Does the error appear on all outlook clients?
Do you use organizational forms library? (KB
933358)
The error can be caused by incorrect permission on the “EFORMS REGISTRY”, so please run the cmdlet below to check the permission on
the Default group, the permission should be “Reviewer”
Get-PublicFolderClientPermission “\NON_IPM_SUBTREE\EFORMS REGISTRY”
Per my research, you can avoid this error by removing all the subfolders in the “EFORMS REGISTRY” folder, if you don’t use organizational
forms library. But, please use the Get-PublicFolderStatistics cmdlet to verify that no items under the “EFORMS REGISTRY” folder before. And, if the error still appears, please remove the OST file and then recreate the mail profile
Please run ExBPA against the exchange servers for health/permission check
Notes: If forms library replicas are added to Exchange 2010 servers, 80004005-501-4B9-560
will appear in the sync message, yet it can be safely ignored
Resources:
“The Organizational Forms Library has been deleted and re-created after the .ost file has synchronized the library” section
in You receive an error message when you try to synchronize your offline folder file if the Organizational Forms Library on your Exchange computer has
been re-created or cannot be located
James Luo
TechNet Subscriber Support (http://technet.microsoft.com/en-us/subscriptions/ms788697.aspx)
If you have any feedback on our support, please contact [email protected]

"Resend" option is not working for specific user. "The Operation Failed" Exchange 2010 Outlook 2013

Hi Everybody. I have a weird one for you.
I have a user that gets an "operation failed" message whenever trying to use the "resend" option on any email (It's the one right under recall). I had tested up and down on her machine. Exchange 2010 Outlook 2013
Ran in safe mode, recreated her profile, disabled virus scanning, repaired office. (weird, the font just changed sizes on me)
After all of this I tested on other computers, other users seem to be able to "resend" just fine. However her account does not work on any computer I try, internal or external to the network.
It looks more like a profile issue.
She's a very active archivist, so she only has 486MB of space used by her mailbox.
It's well under quota.
It's been really puzzling me.
MCSE 2003, Exchange. MCTS Vista, 7. Administrator of awful, neglected website http://timssims.net

Hi Timssims,
Since there is only one user in the org has this issue, it seems an issue on the Outlook client side.
I suggest asking Outlook Forum for help so that we can get more professional suggestions.
For your convenience:
https://social.technet.microsoft.com/Forums/office/en-US/home?forum=outlook
However I also have some suggestions for your reference:
1. If this issue occur on Cached Mode, I suggest turning to Online Mode for testing.
2. Please also paste the detailed error message if "operation failed" is not the
complete information.
3. If still not works after perform operations above (including suggestions from Outlook Forum), I suggest re-creating a new mailbox for the specific user just as Martin suggested.
Thanks
Mavis
Mavis Huang
TechNet Community Support

Outlook 2013 not connect with Exchange server 2013 in internal network

Hello All,
I Have two Exchange server 2013 in our environment. Both server install mailbox and CAS role. After configure exchange server 2013, Outlook 2013 not connect in internal network. I have configure outlook manually. i tried by using the suggestion from blog
but not work. Outlook show that Server cannot connect/ server name could not be resolved. in outlook setting i also put exchange proxy setting. In exchange admin center i have changed the OWA, OAB, Auto discover name. But still not work.
I know that outlook can be connect from external by using ssl certificate and publish outlook anywhere but i did my configure from internal network.
Can you please suggest as soon as possible.
Thanks,
Parvez

Hi,
Firstly, I’d like to explain, same with external users, internal users use Outlook Anywhere to connect with Exchange server and use Autodiscover get all settings.
Thus, let’s try the following resolutions:
1. run the following command: get-clientaccessservice |fl autodiscoverserviceinternaluri
2. check if the host name in the above URL is in the DNS server and there is a DNS entry about the host name points to the proper IP address.
3. Check if the above host name is in your certificate.
Thanks,
Angela
Angela Shi
TechNet Community Support

Exchange 2010 - Outlook is dropping connections to Exchange servers

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